Introduction to the raw material performance of wear-resistant steel lined polyurethane tees for mining.

The polyurethane raw material is an active elastomer material. After being subjected to stress, the shape change of the polyurethane lags behind the stress action time, thereby converting most of the scouring force generated by stress into internal energy and in the form of heat energy. Disperse.

The remaining small part of the erosion force rebounds back to the conveying medium with the hysteretic deformation of the polyurethane to offset the subsequent stress erosion. Therefore, this characteristic of polyurethane cleverly uses force to greatly reduce the wear and erosion of the wear-resistant layer by the conveying medium, thereby achieving unexpected durability effects.

Applying carbon nanomaterials to wear-resistant pipes is a top international commercial technology. Through a certain proportion and complex process, the advantages and disadvantages of the two complement each other.

After many related simulation experiments and engineering applications, it has been proven that carbon nanopolyurethane materials have been highly optimized in various rational properties. In particular, the improvement in anti-aging performance is particularly prominent. The aging rate of polyurethane materials made of carbon nanometers does not exceed 0.26% in 50 years.
Peel strength 1.4Mpa/2.5cm 2.1Mpa/2.5cm GB15245-1994
Akron wear 0.45cm³/1.61km GB1689-1998
  Low temperature brittleness-42-70 GB1682-2005
Hardness (Shore A) 60-100 60-100 GB531-2004 Density 1.12- 1.2 GB533-2009

Uses of wear-resistant steel lined polyurethane tees for mining:

Mine wear-resistant steel lined polyurethane tee has excellent wear resistance, acid resistance, alkali resistance, radiation resistance, hydrolysis aging resistance, high elasticity, and mechanical impact resistance. It can be widely used in electric power, coal, mining, building materials, and chemical industries. It is used in pipelines transporting pulverized coal, ash, slag, ore powder, aluminum liquid, mud and other abrasive particulate materials and corrosive media.

Electric power industry: ash removal pipelines and ash slag pipelines in thermal power plants. For power plant fresh water, seawater, ash removal and abrasive medium transportation systems, the use of steel-lined polyurethane wear-resistant pipes can better reflect its superiority.

Coal industry: coal washing plant intermediary coal washing long-distance coal transportation pipeline system, sediment backfill in coal mining Mining industry: iron ore slurry, tailings transportation pipeline system, mine flotation system closed circulation pipeline, water and sand transportation pipeline.

Building materials and chemical industry: transportation of coke particles in steel plants, pulverized coal transportation pipelines in cement plants, transportation of corrosive acids and alkalis, salts and corrosive solids, liquid pipelines such as oil, pipeline transportation during mining, silt drainage projects, urban water supply pipeline systems, Aluminum conveyor pipe.

The wear-resistant steel-lined polyurethane tee for mining use has a two-layer structure from the inside to the outside:

First layer: working steel pipe layer. According to the design and customer requirements, seamless pipes (GB8163-87), spiral welded pipes (GB9711-88; SY/T5038-92) and straight seam welded pipes (GB3092-93) are generally selected. After the surface of the steel pipe is treated with advanced shot blasting and rust removal technology, the rust removal grade of the steel pipe can reach the Sa2 level in the GB8923-1988 standard, and the surface roughness can reach R=12.5 microns in the GB6060.5-88 standard.

Second layer: The high-density polyethylene protective layer is pre-made into plastic pipes with a certain wall thickness. Its function is to protect mechanical hard objects from damage and to be anti-corrosion and waterproof.